org.apache.drill.exec.ops.ContextInformation Maven / Gradle / Ivy

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 * Licensed to the Apache Software Foundation (ASF) under one
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 *
 * http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.drill.exec.ops;

import org.apache.drill.exec.proto.BitControl.QueryContextInformation;
import org.apache.drill.exec.proto.UserBitShared.UserCredentials;

/**
 * Provides query context information (such as query start time, query user, default schema etc.) for UDFs.
 */
public class ContextInformation {
  private final String queryUser;
  private final String currentDefaultSchema;
  private final long queryStartTime;
  private final int rootFragmentTimeZone;

  public ContextInformation(final UserCredentials userCredentials, final QueryContextInformation queryContextInfo) {
    this.queryUser = userCredentials.getUserName();
    this.currentDefaultSchema = queryContextInfo.getDefaultSchemaName();
    this.queryStartTime = queryContextInfo.getQueryStartTime();
    this.rootFragmentTimeZone = queryContextInfo.getTimeZone();
  }

  /**
   * @return userName of the user who issued the current query.
   */
  public String getQueryUser() {
    return queryUser;
  }

  /**
   * @return Get the current default schema in user session at the time of this particular query submission.
   */
  public String getCurrentDefaultSchema() {
    return currentDefaultSchema;
  }

  /**
   * @return Query start time in milliseconds
   */
  public long getQueryStartTime() {
    return queryStartTime;
  }

  /**
   * @return Time zone.
   */
  public int getRootFragmentTimeZone() {
    return rootFragmentTimeZone;
  }
}